CAT A vs CAT B Office Fit-Out
What the Landlord Hands Over & What You Build (2026)

What CAT A and CAT B mean

The terms describe who builds what in an office. The office fit-out cost guide puts it simply: landlords often hand over space as a CAT A shell with a basic ceiling, raised floor, base air-conditioning and lighting, and the tenant's fit-out, the CAT B, is everything that makes it your office: layout, partitions, branding, meeting rooms, pantry and finishes.

The labels come from the office market and are used loosely. One landlord's CAT A includes ceiling tiles and light fittings; another's stops at the main aircon ducts and a capped sprinkler grid. That is why the first thing to read is not the brochure but the handover specification attached to the letter of offer or tenancy.

CAT A vs CAT B at a glance

Treat the table as a starting point, not a contract. Each line is one to confirm in writing with the landlord before you price the fit-out.

Bare shell, CAT A or a previous tenant's office

There are really three starting points, and they change the budget more than any finish choice. A bare shell, sometimes called a cold shell, has a raw floor, exposed soffit and capped services; the office renovation cost guide explains that it costs more than refurbishing an existing office because the ceiling, flooring, lighting and air-conditioning are built from scratch. A CAT A unit has those basics in. A unit left by the previous tenant may have useful partitions and aircon, or may have things that need stripping out before you start.

Shophouse offices are a fourth case. The upper-floor shoplot office guide notes there is no CAT A handover there at all: the renovation has to supply what an office block would have provided.

What to check in the letter of offer and tenancy

• The handover specification: the exact list of what the landlord installs before you take the keys.
• Who pays to move sprinkler heads, detectors and aircon diffusers when you build rooms.
• Whether you must use the building's nominated contractors for fire protection, aircon or electrical works.
• The fit-out period, rent-free or not, and the date your rent starts.
• The reinstatement clause: back to CAT A, back to bare shell, or a landlord-specified standard.
• The landlord's fit-out rules: working hours, deposits, insurance and drawing approval.

Get these answers before the layout is fixed. A meeting room that sits under a capped aircon duct or blocks a sprinkler grid is far cheaper to move on paper than after the partitions are built.

What a CAT B fit-out involves

CAT B work follows the order of any office fit-out: survey the space, agree the layout, get the building's approval, then build partitions and ceilings, run power and data, adjust aircon and fire services, lay floors, install joinery and finish. The partition guide compares drywall with demountable systems, and the office cabling guide explains how a raised floor changes where outlets can go.

Specialist systems belong to specialists. Sprinkler and fire-alarm changes are done by the building's fire contractor or a licensed fire specialist; central aircon changes by the aircon specialist; fixed wiring by a registered wireman. A fit-out contractor coordinates these with the rest of the work.

How the split changes your budget

The same layout can cost very different amounts depending on the starting point. On a CAT A floor the budget goes mostly into rooms, finishes and furniture. On a bare shell it also has to carry the ceiling, base lighting, aircon and flooring. ClickBina's published office figures give a feel for the items (indicative 2026, Klang Valley):

Avoiding paying twice for the same work

The classic waste in a CAT A to CAT B fit-out is removing what the landlord just installed. Ceiling tiles come down for a feature ceiling, a new raised-floor layout fights the floor boxes, or the landlord's light fittings are thrown away for a different style. Some landlords will agree to leave out items you will replace, or to credit them, if asked before handover. Ask early, and put any agreement in writing.

The same goes for a previous tenant's fit-out: if partitions, aircon or a pantry suit your layout, agreeing with the landlord to keep them can save both the strip-out and part of your CAT B.

Reinstatement: what you hand back

Whatever you build, read what you must give back. Many tenancies require the unit to be returned to its original condition, which may mean back to CAT A or back to bare shell. The reinstatement dispute guide explains how the standard, scope and evidence decide deposit deductions. Record the condition at handover, and agree in writing any items that may stay.

Common CAT A and CAT B mistakes

• Assuming CAT A means the same thing in every building.
• Fixing the layout before checking the sprinkler grid and aircon zones.
• Budgeting a bare shell as if it were CAT A.
• Ripping out new landlord items instead of negotiating them out before handover.
• Forgetting the nominated-contractor rule and pricing fire or aircon works with someone the building will not accept.
• Ignoring the reinstatement clause until the lease ends.

How ClickBina can help

ClickBina handles commercial renovation and fit-out works and coordinates the trades: partitions, ceilings, floors, finishes and joinery, with aircon, fire services and electrical works coordinated with the building's specialists. WhatsApp us your job details for a quote: how the unit is handed over, its size and the building. We reply within the hour, and the price agreed is a flat price with no hidden charges. A site visit is RM150, waived if you go ahead. See also office renovation.

Sources & methodology

• ClickBina office fit-out cost guide — the CAT A and CAT B definitions.
• ClickBina office renovation cost guide — bare (cold shell) units and office cost tiers.
• ClickBina partition, office cabling, office flooring and office aircon guides — item prices.
• ClickBina upper-floor shoplot office and reinstatement dispute guides — shophouse offices and hand-back standards.

Methodology: prices are ClickBina indicative 2026 Klang Valley ranges from the guide named beside each. CAT A and CAT B are market terms, not legal ones; the tenancy's handover specification always decides.